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/Title (AN4446, Using the MMA9550 Intelligent Accelerometer to Detect the High Point of a Vertical Trajectory - Application Notes)
/Author (Freescale Semiconductor, Inc)
/Subject (AN4446: This application note addresses the related problem of how to detect the high point \(or apogee\) of a vertical trajectory in the absence of spinning. The instantaneous accelerometer reading cannot be used because the reading is zero from the moment it leaves the thrower's hands until the point of impact with the ground.)
/Keywords (AN4446, MMA9550, Intelligent Accelerometer, High Point, Vertical Trajectory, Xrinsic)
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Freescale Semiconductor, Inc.
This application note addresses the related problem of how to detect the high point (or apogee) of a vertical trajectory in the absence of spinning. The instantaneous accelerometer reading cannot be used since the reading is zero from the moment it leaves the thrower’s hands until the point of impact with the ground. A more advanced approach is required which integrates the accelerometer reading to predict the high point of the trajectory where the vertical velocity is, by definition, zero. The Freescale MMA9550 smart accelerometer sensor, which contains a processor and memory, is ideally suited for problems such as this. Reference C code to implement the algorithm on the MMA9550 is therefore included with this application note.
Using MMA9550 to Detect High Point of a Vertical Trajectory
2011-09-22T12:40:33Z
2012-08-07T15:56:53-05:00
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2012-08-07T15:56:53-05:00
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Accelerometer, Freefall, MMA9550, High point, Apogee, Trajectory
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Freescale Semiconductor, Inc., 2006-2012
Freescale Semiconductor, Inc., 2006-2012
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